the idea that people are to age graceful,ly i don't think he wanted to age gracefully, and the terms of how to age as a rock musician will get stronger, but it will take time to get there. >> sure, i think you see his influences through the 90's , the 80's, and you see his guitar work on metal music, and you see stuff like " juno" taking some of his pop acoustic hits from the 60's, and you're seeing a lot of influences in so many spectrums of music. >> gentlemen thank you so much. that's all we have time for today. that's it from the team in washington, d.c. and from me, libby casey. thank you for watching. good night.